Circuit board for eye movement tracking

Abstract

The utility model belongs to the technical field of circuit boards, in particular to a circuit board for eye movement tracking, which comprises a circuit board, mounting grooves are arranged at four corners of the top of the circuit board, rubber convex rings are clamped on the inner walls of the plurality of mounting grooves, the bottoms of the rubber convex rings penetrate through the circuit board and extend to the lower part, and the circuit board is arranged in the mounting grooves. The inner walls of the rubber convex rings are fixedly connected with limiting rings, and the tops of the limiting rings are fixedly connected with rubber pads. A screw penetrates through the interior of a rubber convex ring to be installed, the screw moves downwards along the rubber convex ring until the screw extrudes a rubber pad and is embedded into a second conical groove, pressure is applied to a limiting ring through the rubber pad, the pressure is transmitted to the inner side of the rubber convex ring, and therefore the circuit board can be fixed; and through the rubber convex ring and the rubber pad, impact force generated during screw fixation can be buffered, and cracking of the circuit board is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, and more specifically to a circuit board for eye tracking. Background Art

[0002] Eye tracking technology is a scientific application technology. First, it tracks the changes in the characteristics of the eyeball and its surroundings; second, it tracks the changes in the angle of the iris; and third, it actively projects infrared light beams to the iris to extract features. The eye tracking FPC is a key component of eye tracking technology. It emits light to the eyeball through infrared LEDs. The infrared camera can capture the light on the eyeball and track the eye through the corneal reflection center and the pupil center.

[0003] In the existing technology, the installation of circuit boards usually requires drilling holes in the circuit board sheet, and then, during assembly, the circuit board is fixed inside the device by bolts. However, when operators fix the circuit board with bolts, they usually use an electric screw gun to install the screws. During the operation, the screws are fixed too tightly, causing the screws to have a greater impact on the circuit board holes, which can easily cause the circuit board to crack. For this reason, we propose a circuit board for eye tracking. Utility Model Content

[0004] Based on the above-mentioned technical problem that "in the prior art, when assembling a circuit board, the circuit board is fixed inside the device by bolts. However, when operators fix the circuit board by bolts, they usually use an electric screw gun to install the screws. During the operation, the screws are fixed too tightly, resulting in a large impact of the screws on the holes in the circuit board, which easily causes the circuit board to crack", the utility model proposes a circuit board for eye tracking.

[0005] The utility model proposes a circuit board for eye tracking, comprising a circuit board, wherein mounting grooves are provided at the four corners of the top of the circuit board, and the inner walls of the plurality of mounting grooves are clamped with rubber convex rings, the bottoms of the rubber convex rings penetrate the circuit board and extend downward, the inner walls of the rubber convex rings are fixedly connected with limiting rings, and the tops of the limiting rings are fixedly connected with rubber pads.

[0006] Preferably, a first conical groove is formed on the top of the rubber convex ring, a second conical groove is formed on the top of the rubber pad, and a curved surface is formed at the connection between the inner wall of the second conical groove and the top.

[0007] Preferably, heat-conducting frames are respectively clamped at both ends of the circuit board, and a plurality of heat sinks are fixedly connected to two relatively close heat-conducting frames, and the plurality of heat sinks are all located below the circuit board.

[0008] Preferably, a butt joint groove is formed on the relatively close sides of the two heat-conducting frames, and two ends of the circuit board extend into the butt joint groove respectively.

[0009] Preferably, a connecting groove is provided on one side of the two heat-conducting frames that are relatively close to each other, the inner walls of the two connecting grooves are rotatably connected to a rotating shaft, both ends of the rotating shaft are sleeved with torsion springs, the circumferential outer walls of the rotating shaft are fixedly connected to a connecting sleeve, the outer walls of the connecting sleeves are fixedly connected to a fixing plate, the outer walls of the fixing plates are provided with an inclined surface, and the bottoms of the two fixing plates are in contact with the top of the circuit board.

[0010] Preferably, one end of the torsion spring is fixedly connected to the connecting sleeve, and the other end of the torsion spring is fixedly connected to the inner wall of the heat conducting frame.

[0011] Preferably, the inner walls of the two heat-conducting frames are threadedly connected with threaded rods, the outer ends of the threaded rods are fixedly connected with knobs, the inner ends of the threaded rods are rotatably connected with extrusion plates, and the bottom of the extrusion plate is slidably connected to the inclined surface.

[0012] The beneficial effects of the present invention are:

[0013] 1. Install the screw by passing it through the rubber convex ring. Move the screw downward along the rubber convex ring until the screw squeezes the rubber pad and is embedded in the second conical groove. Apply pressure to the limit ring through the rubber pad and transfer the pressure to the inside of the rubber convex ring, so that the circuit board can be fixed. The rubber convex ring and the rubber pad can buffer the impact force generated when the screw is fixed to prevent the circuit board from cracking.

[0014] 2. By installing a heat-conducting frame on both sides of the circuit board, the heat-conducting frame transfers the heat on the surface of the circuit board to multiple heat sinks when the circuit board is in use, and the heat sink can improve the heat dissipation efficiency of the circuit board.

[0015] 3. By clamping the two heat-conducting frames on both sides of the circuit board respectively, the threaded rod is driven to rotate by turning the knob, and the extrusion plate is pushed by the threaded rod to slide along the inclined surface at the top of the fixed plate. The fixed plate is squeezed downward by the extrusion plate, so that the fixed plate rotates around the shaft, thereby squeezing the circuit board, so that multiple heat sinks and heat-conducting frames can be easily fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural schematic diagram of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal installation structure of the rubber convex ring of the utility model;

[0019] Figure 4 It is a schematic diagram of the installation structure of the fixing plate of the utility model.

[0020] In the figure: 1, circuit board; 2, mounting groove; 3, rubber convex ring; 4, first conical groove; 5, limiting ring; 6, rubber pad; 7, second conical groove; 8, arc surface; 9, heat sink; 10, heat conduction frame; 11, docking groove; 12, threaded rod; 13, knob; 14, connecting groove; 15, rotating shaft; 16, torsion spring; 17, connecting sleeve; 18, fixing plate; 19, extrusion plate; 20, inclined surface. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The circuit board 1 in this embodiment refers to a flexible circuit board for eye tracking disclosed in the Chinese patent document with publication number CN220984554U, which is an improvement on the circuit board material based on the patent document. The flexible circuit board for eye tracking is a prior art, so it will not be described in detail in the embodiments of this document. The technical solution to be solved in this application document does not involve improvements to the flexible circuit board for eye tracking, circuits, and electronic component connections.

[0023] like Figure 1 and Figure 3 As shown, a circuit board for eye tracking includes a circuit board 1, and mounting grooves 2 are provided at the four corners of the top of the circuit board 1. The inner walls of the plurality of mounting grooves 2 are clamped with rubber convex rings 3, the bottom of the rubber convex rings 3 penetrate the circuit board 1 and extend downward, the inner walls of the rubber convex rings 3 are fixedly connected with limit rings 5, the tops of the limit rings 5 ​​are fixedly connected with rubber pads 6, the tops of the rubber convex rings 3 are provided with first conical grooves 4, the tops of the rubber pads 6 are provided with second conical grooves 7, and the connection between the inner walls and the tops of the second conical grooves 7 is provided with arc surfaces 8, screws are installed by passing through the rubber convex rings 3, and the screws move downward along the rubber convex rings 3 until the screws squeeze the rubber pads 6 and are embedded in the second conical grooves 7, and pressure is applied to the limit rings 5 ​​by the rubber pads 6, and the pressure is transmitted to the inner side of the rubber convex rings 3, so that the circuit board 1 can be fixed, and the impact force generated when the screws are fixed can be buffered by the rubber convex rings 3 and the rubber pads 6 to prevent the circuit board 1 from cracking.

[0024] like Figure 1 and Figure 2As shown, heat-conducting frames 10 are respectively clamped at both ends of the circuit board 1, and a plurality of heat sinks 9 are fixedly connected to some of the two relatively close heat-conducting frames 10. The plurality of heat sinks 9 are all located below the circuit board 1, and docking grooves 11 are provided on the relatively close sides of the two heat-conducting frames 10. The two ends of the circuit board 1 extend to the inside of the docking grooves 11. By installing the heat-conducting frames 10 on both sides of the circuit board 1, the heat-conducting frames 10 transfer the heat on the surface of the circuit board 1 to the plurality of heat sinks 9 when the circuit board 1 is in use, and the heat sinks 9 can improve the heat dissipation efficiency of the circuit board 1.

[0025] like Figure 2 and Figure 4 As shown, a connecting groove 14 is provided on one side of the two heat-conducting frames 10 that are relatively close to each other, and the inner walls of the two connecting grooves 14 are rotatably connected to a rotating shaft 15, and torsion springs 16 are sleeved on both ends of the rotating shaft 15. The outer walls of the rotating shaft 15 are fixedly connected to a connecting sleeve 17, and the outer walls of the connecting sleeve 17 are fixedly connected to a fixing plate 18. The outer wall of the fixing plate 18 is provided with an inclined surface 20, and the bottoms of the two fixing plates 18 abut against the top of the circuit board 1, one end of the torsion spring 16 is fixedly connected to the connecting sleeve 17, and the other end of the torsion spring 16 is fixedly connected to the inner wall of the heat-conducting frame 10, and the inner walls of the two heat-conducting frames 10 are threadedly connected to a threaded rod 12, and the threaded rod 1 The outer ends of the threaded rods 12 are fixedly connected with knobs 13, and the inner ends of the threaded rods 12 are rotatably connected with extrusion plates 19. The bottom of the extrusion plates 19 is slidably connected with the inclined surface 20. By clamping the two heat-conducting frames 10 on both sides of the circuit board 1 respectively, the threaded rods 12 are driven to rotate by rotating the knobs 13, and the extrusion plates 19 are pushed by the threaded rods 12 to slide along the inclined surface 20 at the top of the fixing plate 18. The fixing plate 18 is squeezed downward by the extrusion plates 19, so that the fixing plate 18 rotates around the rotating shaft 15, thereby squeezing the circuit board 1, so that the plurality of heat sinks 9 and the heat-conducting frames 10 can be easily fixed.

[0026] Working principle: The screw is installed by passing through the rubber convex ring 3, and the screw moves downward along the rubber convex ring 3 until the screw squeezes the rubber pad 6 and is embedded in the second conical groove 7. The rubber pad 6 applies pressure to the limit ring 5, and the pressure is transmitted to the inner side of the rubber convex ring 3, so that the circuit board 1 can be fixed;

[0027] By installing a heat-conducting frame 10 on both sides of the circuit board 1, the heat-conducting frame 10 transfers the heat on the surface of the circuit board 1 to the plurality of heat sinks 9 when the circuit board 1 is in use, and the heat sinks 9 can improve the heat dissipation efficiency of the circuit board 1;

[0028] By clamping the two heat-conducting frames 10 on both sides of the circuit board 1 respectively, the threaded rod 12 is driven to rotate by turning the knob 13, and the extrusion plate 19 is pushed by the threaded rod 12 to slide along the inclined surface 20 on the top of the fixed plate 18, and the fixed plate 18 is squeezed downward by the extrusion plate 19, so that the fixed plate 18 rotates around the rotating shaft 15, thereby squeezing the circuit board 1, so that multiple heat sinks 9 and heat-conducting frames 10 can be easily fixed.

[0029] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A circuit board for eye tracking, comprising a circuit board (1), characterized in that: The circuit board (1) is provided with mounting grooves (2) at the four corners of the top, and the inner walls of the plurality of mounting grooves (2) are clamped with rubber convex rings (3). The bottom of the rubber convex ring (3) passes through the circuit board (1) and extends downward, and the inner walls of the rubber convex rings (3) are fixedly connected to limit rings (5), and the tops of the limit rings (5) are fixedly connected to rubber pads (6).

2. The circuit board for eye tracking according to claim 1, characterized in that: The top of the rubber convex ring (3) is provided with a first conical groove (4), the top of the rubber pad (6) is provided with a second conical groove (7), and a curved surface (8) is provided at the connection between the inner wall of the second conical groove (7) and the top.

3. The circuit board for eye tracking according to claim 2, characterized in that: Heat-conducting frames (10) are respectively clamped at both ends of the circuit board (1), and a plurality of heat sinks (9) are fixedly connected to two relatively close heat-conducting frames (10), and the plurality of heat sinks (9) are all located below the circuit board (1).

4. The circuit board for eye tracking according to claim 3, characterized in that: A butt joint groove (11) is provided on one side of the two heat-conducting frames (10) that are relatively close to each other, and two ends of the circuit board (1) extend into the inside of the butt joint groove (11) respectively.

5. The circuit board for eye tracking according to claim 4, characterized in that: A connecting groove (14) is provided on one side of the two heat-conducting frames (10) that are relatively close to each other. The inner walls of the two connecting grooves (14) are rotatably connected to a rotating shaft (15). Both ends of the rotating shaft (15) are sleeved with a torsion spring (16). The circumferential outer wall of the rotating shaft (15) is fixedly connected to a connecting sleeve (17). The outer wall of the connecting sleeve (17) is fixedly connected to a fixing plate (18). The outer wall of the fixing plate (18) is provided with an inclined surface (20). The bottoms of the two fixing plates (18) are in contact with the top of the circuit board (1).

6. The circuit board for eye tracking according to claim 5, characterized in that: One end of the torsion spring (16) is fixedly connected to the connecting sleeve (17), and the other end of the torsion spring (16) is fixedly connected to the inner wall of the heat conducting frame (10).

7. The circuit board for eye tracking according to claim 6, characterized in that: The inner walls of the two heat-conducting frames (10) are threadedly connected with threaded rods (12), the outer ends of the threaded rods (12) are fixedly connected with knobs (13), the inner ends of the threaded rods (12) are rotatably connected with extrusion plates (19), and the bottom of the extrusion plates (19) is slidably connected with the inclined surface (20).

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